Over 1000 photos are stuck uploading - how to fix? PC

Solved - find the files that have got stuck in the upload pipe! Which is pretty much what brastein said above. Anyway, this is how I did it:

1. Using Windows Explorer search I had already deleted over 4000 txt, thm, psf, dat and ini files

2. Open a Powershell prompt (Start menu)

3. Navigate to your Photos Upload folder, e.g.:

cd "C:\\Users\\Dave\\Pictures\\iCloud Photos\\Uploads"

4. Run this command:

Get-ChildItem -Recurse -Include \*.\* | Group-Object Extension -NoElement

5. This returns counts for each extension which was this for me:

`Count Name`

`----- ----`

`18626 .JPG`

`31 .picasaoriginals`

`15 .mts`

`2 .zip`

`4 .jbf`

`1 .bmp`

`2 .PNG`

`1 .info`

`6 .NPO`

`4 .mp4`

6. In Windows Explorer search bar (top right) enter each .extension and select and delete all files returned (checking them obviously and sometimes moving them elsewhere)

For me I deleted everything but the .JPG files. Waited a few seconds (also went into iCloud options and came back out) and suddenly files started uploading. The 4 .mp4 files were already in iCloud, and they had dodgy dates from 1947 on them!? So something unblocked the blockage. Could have been going into iCloud settings, but I suspect it was one of the files above I deleted.

Hope this helps someone.

Another bit of useful info is that you can see what recent 10 images/videos iCloudPhotos.exe has been working on in this folder:

C:\Users\{username}\AppData\Local\Apple Inc\iCloudPhotoLibrary\Staging\Derivatives

You get 40 files, 4 sets of 10. Look at the jpeg thumbnails and you can work out what it's processing.

Happened again with 800 mov files, all taken with iPhone. Left running over night and it got stuck after about 200 uploads. You can tell when it's stuck because the CPU and Network send bytes are negligible for iCloudPhotos.exe for a long period of time (like hours), meaning it's not doing anything.

I've watched how iCloudPhotos works, and it seems to process 10 videos at a time (not sure about photos) so you'll see CPU hit around 50% on a quad core system. Then after about several minutes the CPU will drop to 0%, and the network traffic will ramp up on the transmit (I'm using Windows Resource Monitor and filtering on iCloudPhotos.exe). This will last a while depending on video sizes and upload bandwidth. And hey presto your iCloud Photos Uploading items count drops by 10. Then cycle repeats - process 10 files, upload 10 files, repeat.

So to fix it this time (it was just mov files, so no bad files), I restarted PC. No idea why it got stuck.

To clarify "These files then remain in this folder even if you delete them" I mean the photos remain in iCloud after they've been deleted from this upload folder (assuming they successfully uploaded of course).